Parsing in other response post for note model

This will make it easier to see the context of the post the user clicked on
and follow the conversation all the way down.
Implement getResponses used by parse method
Add response data to post template
Add styling for new responses
Now render all `a` tags the same
Add toggle button for responses visiblity
Add behavior to response button
Add style to response button
Merge branch 'post/context'